Create Gemfile, spec file, main .rb file and run bundle install.
Add test to ensure BowlingGame initializes with empty array.
 Added getter attr_accessor to be able to call game.roll in spec file
add score and roll methods to bowling_game.rb create test for 0 case (all gutter balls)
Add test for next simplest case (all 1 pin bowls)
Add comments for score and roll method
Replace game = BowlingGame.new in test file with one let statement
Fill out score method to account for spares
Add logic to handle strikes in score method and test